I would appreciate any opinion (with reasons) on the following material by Pari Spolter. Accordingly, using her math forumula, she ascertains mass does not come into the calculations for determining planetary (Sun, etc.) gravity. Also calculates the moon's gravity is at least 68.71% that of Earth's. Any thoughts? See below. Her book is "Gravitational Force of the Sun" by Pari Spolter. Thanks to all who respond!